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. 2011 Oct 19;6(10):e26265. doi: 10.1371/journal.pone.0026265

Figure 1. Impact of the two isogenic groups of pediatric H. pylori strains on NCI-N87 cells viability.

Figure 1

The viability of NCI-N87 cells was assessed by the trypan blue exclusion assay after 1, 12 and 24 h of co-culture with a pool of five pediatric PUD-associated strains (▪ in full line) and a pool of five pediatric NUD-associated strains (• in dashed line). For normalization, the value of 100% corresponds to the viability of non-infected NCI-N87 cells. * indicates values that were determined as significantly different (p<0.05) between the viability of cells infected with PUD strains and that of cells infected with NUD-strains at the same time-point of co-culture. Symbols and error bars are means ± SD of the values at each point for 3 observations.